circle_renderer Struct Reference

Functor for rendering circular shapes. More...

#include <renderers.hpp>

Public Member Functions
void	operator() (SDL_Renderer *renderer, float pos_x, float pos_y, float size, SDL_Color color) const
	Renders a circular shape at the specified position.

Private Member Functions
void	DrawFilledCircle (SDL_Renderer *renderer, int32_t center_x, int32_t center_y, int32_t radius) const
	Helper method to draw a filled circle.

Detailed Description

Functor for rendering circular shapes.

This struct provides an operator to render filled circles at specified positions

Member Function Documentation

DrawFilledCircle()

void circle_renderer::DrawFilledCircle ( SDL_Renderer * renderer, int32_t center_x, int32_t center_y, int32_t radius ) const

private

Helper method to draw a filled circle.

Parameters

renderer	The SDL renderer used for drawing
center_x	The x coordinate of the circle's center
center_y	The y coordinate of the circle's center
radius	The radius of the circle

Uses the midpoint circle algorithm to efficiently render a filled circle.

Parameters

renderer	The SDL renderer used for drawing
center_x	The x coordinate of the circle's center
center_y	The y coordinate of the circle's center
radius	The radius of the circle

operator()()

void circle_renderer::operator()	(	SDL_Renderer *	renderer,
		float	pos_x,
		float	pos_y,
		float	size,
		SDL_Color	color ) const

Renders a circular shape at the specified position.

Functors encapsulate the shape rendering logic.

Parameters

renderer	The SDL renderer used for drawing
pos_x	The x coordinate of the circle's center
pos_y	The y coordinate of the circle's center
size	The diameter of the circle
color	The color to fill the circle with

Using functors allows us to easily add new shape types and test them individually. This approach greatly accelerated development by enabling isolated testing of renderers.

Renders a circular shape at the specified position

Parameters

renderer	The SDL renderer used for drawing
pos_x	The x coordinate of the circle's center
pos_y	The y coordinate of the circle's center
size	The diameter of the circle
color	The color to fill the circle with

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The documentation for this struct was generated from the following files:

• renderers.hpp
• renderers.cpp